rt2860_mcu_bbp_read
static uint8_t rt2860_mcu_bbp_read(struct rt2860_softc *, uint8_t);
uint8_t bbp0 = rt2860_mcu_bbp_read(sc, 0);
bbp3 = rt2860_mcu_bbp_read(sc, 3);
bbp1 = rt2860_mcu_bbp_read(sc, 1);